/* casestudy.css — DESIGN.md トークン準拠
   生成: tools/build-casestudy-css.py
   現行 casestudy.css / casestudy-index.css をトークン写像し、
   旧Bootstrap事例を受ける .case-body 互換層（tools/_case_layer.css）を足したもの。 */

/* ===== 旧テンプレート変数の写像 =====
   現行 casestudy.css は配色をこの変数から引いている。値だけを差し替えれば
   セレクタとレイアウトを触らずにDESIGN.md準拠にできる（insights と同じ手口） */
:root {
  --primary: var(--blue-700);
  --primary-hover: var(--blue-500);
  --surface: #fff;
  --surface-muted: var(--paper);
  --border: var(--line);
  --border-strong: var(--device-edge);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-sub);
  --text-muted: var(--ink-sub);   /* 旧値は白地で2.6:1しか出ずAA不適合だった */
  --container-max: 1100px;
  --header-h: 117px;              /* 新ヘッダー実測値 */
}


/* ===== casestudy.css（トークン写像） ===== */

/*
 * casestudy.css — 事例紹介ページ用スタイル
 * template.css を前提に、事例一覧と個別記事の読み物体験を定義する。
 */

.casestudy-index-page,
.casestudy-detail-page {
  background: var(--surface);
}

/* 事例詳細では subhero の直下に置かれる（見出し・パンくず・ヘッダー分の余白は subhero が正）。
   ここでヘッダー高さを二重に取るとリードの前に空白帯ができる（2026-08-04 修正） */
.case-hero {
  position: relative;
  padding: 44px 0 52px;
  background: var(--paper);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.case-hero .container {
  position: relative;
  z-index: 1;
}

.casestudy-index-page .case-hero {
  background: linear-gradient(180deg, var(--paper) 0%, #fff 100%);
}

.case-hero__layout {
  display: block;
}

.case-hero__copy {
  max-width: 820px;
}

.case-hero__eyebrow,
.case-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}

.case-hero__eyebrow {
  color: var(--text-muted);
}

.case-hero h1 {
  max-width: 780px;
  font-size: 40px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 18px;
}

.case-hero__lead {
  max-width: 760px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.95;
  margin-bottom: 28px;
}

.case-hero__actions,
.case-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.case-button,
.case-button--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 18px;
  border-radius:var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.case-button {
  background: var(--primary);
  color: var(--surface);
  border: 1px solid var(--primary);
}

.case-button:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--surface);
}

.case-button--ghost {
  border: 1px solid var(--border-strong);
  color: var(--primary);
  background: var(--surface);
}

.case-button--ghost:hover {
  background: var(--surface-muted);
  border-color: var(--primary);
}

.case-section {
  padding: 74px 0;
}

.casestudy-detail-page .case-section {
  padding: 64px 0 72px;
}

.case-section--muted {
  background: var(--surface-muted);
}

.case-section__head {
  max-width: 760px;
  margin-bottom: 38px;
}

.case-section__head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.case-section__head h2,
.case-article h2 {
  font-size: 30px;
  line-height: 1.45;
  font-weight: 700;
  margin-bottom: 14px;
}

.case-section__head p,
.case-article > p {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 16px;
}

.case-feature-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 34px;
  align-items: stretch;
  padding: 34px;
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  background: var(--surface);
}

.case-feature-card__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-label-row,
.case-card__meta,
.case-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 14px;
}

.case-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius:var(--radius-xs);
  background: var(--surface-muted);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
}

.case-pill--new,
.case-pill--primary {
  color: var(--primary);
  background: #fff;
  border-color: rgba(26,40,136,0.18);
}

.case-feature-card h3 {
  font-size: 27px;
  line-height: 1.45;
  margin-bottom: 16px;
}

.case-feature-card h3 a,
.case-card h3 a,
.case-link-list a {
  color: var(--text-primary);
  text-decoration: none;
}

.case-feature-card h3 a:hover,
.case-card h3 a:hover,
.case-link-list a:hover {
  color: var(--primary);
}

.case-feature-card p {
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 24px;
}

.case-feature-card__visual {
  min-height: 300px;
  border-radius:var(--radius-sm);
  background: var(--paper);
  color: var(--text-primary);
  padding: 28px;
  display: grid;
  align-content: space-between;
  overflow: hidden;
  border: 1px solid var(--border);
}

.case-feature-card__visual-title {
  font-size: 14px;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

.case-feature-card__diagram {
  display: grid;
  gap: 12px;
}

.case-diagram-node {
  padding: 14px 16px;
  border-radius:var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border);
}

.case-diagram-node strong {
  display: block;
  font-size: 15px;
  margin-bottom: 3px;
}

.case-diagram-node span {
  color: var(--text-secondary);
  font-size: 13px;
}

.case-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.case-card-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.case-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow: hidden;
}

.case-card__image {
  aspect-ratio: 16 / 9;
  background: var(--surface-muted);
  border-bottom: 1px solid var(--border);
}

.case-card__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.case-card h3 {
  font-size: 20px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.case-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.82;
  margin-bottom: 18px;
}

.case-card__body .case-actions,
.case-card__body .case-link-list {
  margin-top: auto;
}

.case-text-card {
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  padding: 24px;
  background: var(--surface);
}

.case-text-card h3 {
  font-size: 19px;
  line-height: 1.55;
  margin-bottom: 12px;
}

.case-text-card p,
.case-text-card li {
  color: var(--text-secondary);
  line-height: 1.85;
}

.case-link-list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.case-link-list a {
  display: inline-flex;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

.case-link-list a::after {
  content: '→';
}

.case-mini-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.case-mini-list li {
  position: relative;
  padding-left: 20px;
}

.case-mini-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 7px;
  border-radius:50%;
  background: var(--primary);
}

.case-cta-band {
  padding: 66px 0;
  color: var(--text-primary);
  background: var(--paper);
  border-top: 1px solid var(--border);
}

.case-cta-band .case-section__head p {
  color: var(--text-secondary);
}

.case-cta-band .case-eyebrow {
  color: var(--primary);
}

.case-cta-band .case-button {
  background: var(--primary);
  color: var(--surface);
}

.case-cta-band .case-button:hover {
  background: var(--primary-hover);
  color: var(--surface);
}

.case-cta-band .case-button--ghost {
  background: var(--surface);
  color: var(--primary);
  border-color: var(--border-strong);
}

.case-cta-band .case-button--ghost:hover {
  background: var(--surface-muted);
  border-color: var(--primary);
}

/* Detail page */
.case-breadcrumb {
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

.case-breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.case-breadcrumb a:hover {
  color: var(--primary);
}

.case-article-layout {
  display: grid;
  grid-template-columns: minmax(0, 740px) 280px;
  gap: 56px;
  align-items: start;
}

.case-article-main {
  min-width: 0;
}

.case-article {
  padding: 42px 0;
  border-bottom: 1px solid var(--border);
}

.case-article:first-child {
  padding-top: 0;
}

.case-article:last-child {
  border-bottom: 0;
}

.case-source-card {
  margin: 0 0 34px;
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}

.case-source-card a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.case-source-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.case-source-card figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 18px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.case-source-card strong {
  color: var(--text-primary);
  font-size: 16px;
}

.case-article h2 {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.case-article h3 {
  font-size: 20px;
  line-height: 1.55;
  margin: 28px 0 10px;
}

.case-article p + p {
  margin-top: 15px;
}

.case-article ul,
.case-article ol {
  margin: 18px 0 0 1.3em;
  color: var(--text-secondary);
  line-height: 1.85;
}

.case-article li + li {
  margin-top: 8px;
}

.case-article-lead {
  font-size: 18px !important;
  color: var(--text-primary) !important;
  line-height: 1.95 !important;
}

.case-info-grid {
  display: grid;
  grid-template-columns: 170px 1fr;
  border-top: 1px solid var(--border);
  margin-top: 26px;
  font-size: 15px;
}

.case-info-grid dt,
.case-info-grid dd {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.case-info-grid dt {
  background: var(--surface-muted);
  color: var(--primary);
  font-weight: 700;
}

.case-info-grid dd {
  color: var(--text-primary);
}

.case-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.case-compare__item {
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  padding: 22px;
  background: var(--surface);
}

.case-compare__item--safe {
  border-color: rgba(21,128,61,0.22);
  background: var(--paper);
}

.case-compare__item--risk {
  border-color: rgba(220,38,38,0.18);
  background: var(--paper);
}

.case-compare__item h3 {
  margin-top: 0;
}

.case-process {
  display: grid;
  gap: 0;
  margin-top: 28px;
  border-top: 1px solid var(--border);
}

.case-process__step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.case-process__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius:50%;
  background: var(--surface-muted);
  color: var(--primary);
  border: 1px solid var(--border);
  font-weight: 700;
  font-size: 13px;
}

.case-process__step h3 {
  margin: 0 0 4px;
  font-size: 18px;
}

.case-process__step p {
  color: var(--text-secondary);
  margin: 0;
}

.case-table-wrap {
  overflow-x: auto;
  margin-top: 24px;
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
  background: var(--surface);
}

.case-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

.case-table th,
.case-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.case-table th {
  background: var(--surface-muted);
  color: var(--primary);
  font-size: 14px;
}

.case-table tr:last-child td {
  border-bottom: 0;
}

.case-highlight {
  margin: 26px 0;
  padding: 22px 24px;
  border-radius:var(--radius-sm);
  background: var(--paper);
  border: 1px solid var(--border);
}

.case-highlight h3 {
  margin-top: 0;
}

.case-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: grid;
  gap: 18px;
}

.case-sidebar__panel {
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius:var(--radius-sm);
}

.case-sidebar__panel h2 {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 12px;
}

.case-sidebar__panel p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
}

.case-sidebar__panel ul {
  list-style: none;
  display: grid;
  gap: 8px;
}

.case-sidebar__panel li,
.case-sidebar__panel a {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.case-sidebar__panel a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.case-note {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 18px;
}

/* Editorial treatment for individual case studies.
   注: body に .casestudy-detail-page は付いていないため、この配下のセレクタは現状効かない
   （載せ替え時にクラスが落ちた）。実効スタイルは上の .case-hero 基本定義。 */
.casestudy-detail-page .case-hero {
  padding: 66px 0 58px;
  background: linear-gradient(135deg, #fff 0%, var(--paper) 54%, var(--blue-100) 100%);
}

.casestudy-detail-page .case-hero::before {
  content: '';
  position: absolute;
  right: max(24px, calc((100vw - var(--container-max)) / 2 + 24px));
  top: 56px;
  width: 252px;
  height: 168px;
  border: 1px solid rgba(26,40,136,0.14);
  border-radius:var(--radius-sm);
  background:
    linear-gradient(rgba(26,40,136,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,40,136,0.05) 1px, transparent 1px),
    rgba(255,255,255,0.72);
  background-size: 24px 24px;
  box-shadow:var(--shadow-hover);
}

.casestudy-detail-page .case-hero::after {
  content: 'SERVER LOGS  →  LOCAL LLM  →  STAFF REVIEW';
  position: absolute;
  right: max(42px, calc((100vw - var(--container-max)) / 2 + 42px));
  top: 96px;
  width: 216px;
  padding: 16px 18px;
  border-radius:var(--radius-sm);
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(26,40,136,0.12);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: 0;
  box-shadow:var(--shadow-hover);
}

.casestudy-detail-page .case-hero__copy {
  position: relative;
  max-width: 800px;
  padding-left: 24px;
  border-left: 4px solid rgba(26,40,136,0.18);
}

.casestudy-detail-page .case-hero h1 {
  font-size: 39px;
  line-height: 1.42;
  margin-bottom: 16px;
}

.casestudy-detail-page .case-hero__lead {
  max-width: 780px;
  margin-bottom: 22px;
}

.casestudy-detail-page .case-hero__actions {
  margin-top: 4px;
}

.casestudy-detail-page .case-hero__actions .case-button,
.casestudy-detail-page .case-hero__actions .case-button--ghost {
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius:0;
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 5px;
  box-shadow: none;
}

.casestudy-detail-page .case-hero__actions .case-button::after,
.casestudy-detail-page .case-hero__actions .case-button--ghost::after {
  content: '↓';
  margin-left: 6px;
  text-decoration: none;
}

.casestudy-detail-page .case-hero__actions .case-button:hover,
.casestudy-detail-page .case-hero__actions .case-button--ghost:hover {
  background: transparent;
  color: var(--primary-hover);
  border: 0;
}

.casestudy-detail-page .case-article-main {
  background: var(--surface);
}

.casestudy-detail-page .case-article h2 {
  font-size: 28px;
  padding-top: 2px;
}

.casestudy-detail-page .case-article h2::before {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  margin-bottom: 14px;
  border-radius:var(--radius-xs);
  background: var(--border-strong);
}

.casestudy-detail-page #overview h2::before {
  display: none;
}

.casestudy-detail-page .case-text-card,
.casestudy-detail-page .case-compare__item,
.casestudy-detail-page .case-highlight,
.casestudy-detail-page .case-table-wrap,
.casestudy-detail-page .case-source-card {
  box-shadow: none;
}

.casestudy-detail-page .case-text-card:hover,
.casestudy-detail-page .case-card:hover {
  transform: none;
}

.casestudy-detail-page .case-cta-band .case-section__head {
  max-width: 780px;
}

@media (max-width: 920px) {
  .case-feature-card,
  .case-article-layout {
    grid-template-columns: 1fr;
  }

  .case-sidebar {
    position: static;
  }

  .case-card-grid,
  .case-card-grid--2,
  .case-compare {
    grid-template-columns: 1fr;
  }

  .casestudy-detail-page .case-hero::before,
  .casestudy-detail-page .case-hero::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .case-hero,
  .casestudy-detail-page .case-hero {
    padding: 44px 0 38px;
  }

  .case-hero h1,
  .casestudy-detail-page .case-hero h1 {
    font-size: 29px;
  }

  .case-hero__lead,
  .casestudy-detail-page .case-hero__lead {
    font-size: 16px;
  }

  .casestudy-detail-page .case-hero__copy {
    padding-left: 18px;
  }

  .case-feature-card,
  .case-text-card,
  .case-sidebar__panel {
    padding: 22px;
  }

  .case-info-grid {
    grid-template-columns: 1fr;
  }

  .case-source-card figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .case-info-grid dt {
    padding-bottom: 4px;
    border-bottom: 0;
  }

  .case-section,
  .case-article,
  .casestudy-detail-page .case-section {
    padding: 52px 0;
  }

  .case-section__head h2,
  .case-article h2,
  .casestudy-detail-page .case-article h2 {
    font-size: 24px;
  }

  .case-process__step {
    grid-template-columns: 1fr;
  }
}


/* ===== casestudy-index.css（トークン写像） ===== */

/*
 * casestudy-index.css — 事例トップ専用の編集記事トーン調整
 * 個別事例ページの落ち着いた方向性に合わせつつ、一覧の入口としての視認性を補う。
 */

.casestudy-index-page .case-hero {
  padding: 72px 0 64px;
  background:
    radial-gradient(circle at 78% 22%, rgba(72,128,194,0.2) 0, rgba(72,128,194,0.08) 28%, transparent 48%),
    linear-gradient(135deg, #fff 0%, var(--paper) 52%, var(--blue-100) 100%);
}

.casestudy-index-page .case-hero::before {
  content: '';
  position: absolute;
  right: max(24px, calc((100vw - var(--container-max)) / 2 + 24px));
  top: 58px;
  width: 280px;
  height: 190px;
  border: 1px solid rgba(26,40,136,0.13);
  border-radius:var(--radius-sm);
  background:
    linear-gradient(rgba(26,40,136,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,40,136,0.05) 1px, transparent 1px),
    rgba(255,255,255,0.72);
  background-size: 24px 24px;
  box-shadow:var(--shadow-hover);
}

.casestudy-index-page .case-hero::after {
  content: 'CLOSED AI / NETWORK / CLOUD / VOICE';
  position: absolute;
  right: max(46px, calc((100vw - var(--container-max)) / 2 + 46px));
  top: 102px;
  width: 224px;
  padding: 18px 18px 16px;
  border-radius:var(--radius-sm);
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(26,40,136,0.12);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.9;
  letter-spacing: 0.06em;
  box-shadow:var(--shadow-hover);
}

.casestudy-index-page .case-hero__copy {
  position: relative;
  max-width: 780px;
  padding-left: 24px;
  border-left: 4px solid rgba(26,40,136,0.18);
}

.casestudy-index-page .case-hero h1 {
  font-size: 39px;
  line-height: 1.42;
}

.casestudy-index-page .case-hero__lead {
  max-width: 740px;
}

.casestudy-index-page .case-hero__actions .case-button,
.casestudy-index-page .case-hero__actions .case-button--ghost {
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius:0;
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 5px;
  box-shadow: none;
}

.casestudy-index-page .case-hero__actions .case-button::after {
  content: '↓';
  margin-left: 6px;
}

.casestudy-index-page .case-hero__actions .case-button--ghost::after {
  content: '→';
  margin-left: 6px;
}

.casestudy-index-page .case-hero__actions .case-button:hover,
.casestudy-index-page .case-hero__actions .case-button--ghost:hover {
  background: transparent;
  color: var(--primary-hover);
}

.casestudy-index-page #featured {
  padding-top: 64px;
}

.casestudy-index-page #featured .case-section__head {
  margin-bottom: 28px;
}

.casestudy-index-page .case-feature-card {
  position: relative;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  border-radius:var(--radius-sm);
  background: linear-gradient(135deg, #fff 0%, var(--paper) 100%);
  box-shadow:var(--shadow-hover);
}

.casestudy-index-page .case-feature-card::before {
  content: 'Featured';
  position: absolute;
  top: 22px;
  right: 24px;
  color: rgba(26,40,136,0.18);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.casestudy-index-page .case-feature-card__visual {
  background:
    radial-gradient(circle at 80% 18%, rgba(72,128,194,0.2), transparent 34%),
    var(--paper);
}

.casestudy-index-page .case-diagram-node {
  box-shadow:var(--shadow-hover);
}

.casestudy-index-page .case-section--muted {
  background: var(--paper);
}

.casestudy-index-page .case-card {
  border-radius:var(--radius-sm);
  box-shadow: none;
}

@media (max-width: 920px) {
  .casestudy-index-page .case-hero::before,
  .casestudy-index-page .case-hero::after,
  .casestudy-index-page .case-feature-card::before {
    display: none;
  }
}

@media (max-width: 640px) {
  .casestudy-index-page .case-hero {
    padding: 44px 0 38px;
  }

  .casestudy-index-page .case-hero__copy {
    padding-left: 18px;
  }

  .casestudy-index-page .case-hero h1 {
    font-size: 29px;
  }
}


/* casestudy.css — DESIGN.md トークン準拠
   事例ページ8件は旧Bootstrap3構造。文言・数値・表・画像・見出し階層を一字も動かさないため、
   マークアップは保存し、`.case-body` スコープの中でだけ旧クラスを新しい意匠へ読み替える。
   （Bootstrap本体は読み込まない。ここに書いた分だけが効く） */

/* ---------- 事例本文の器 ---------- */
.case-body { --case-max: 900px; }
.case-body .container { max-width: var(--case-max); margin: 0 auto; padding: 0 24px; }
/* 旧グリッド。col-*-12 は実質ブロックなので素直に積む */
.case-body .row { display: block; }
.case-body [class*="col-"] { width: auto; }
/* 実際に段組みしていた箇所だけ2〜3カラムにする */
@media (min-width: 861px) {
  .case-body .row:has(> .col-lg-4, > .col-md-4, > .col-sm-4) {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
  }
  .case-body .row:has(> .col-xs-3) { display: grid; grid-template-columns: 3fr 7fr; gap: 20px; }
}

/* アイコンフォントは描画しない（DESIGN.md: 汎用アイコン禁止。装飾用の空要素） */
.case-body .glyphicon { display: none; }

/* ---------- 見出し ---------- */
.case-body .demo-titleType1 {
  margin: 0 0 var(--sp-3);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--blue-700);
  font-size: clamp(20px, 2.1vw, 25px);
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--ink);
  font-feature-settings: "palt";
}
.case-body h3 {
  margin: 28px 0 10px;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.6;
  color: var(--ink);
  font-feature-settings: "palt";
}
.case-body h4,
.case-body .h_blue,
.case-body .fn_heading {
  margin: 22px 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--blue-700);
}
.case-body .img_title_left { margin: 20px 0 8px; font-size: 15px; font-weight: 700; color: var(--ink-sub); }
.case-body .text-primary { color: var(--blue-700); }

/* ---------- 本文 ---------- */
.case-body p { margin: 0 0 16px; font-size: 15.5px; line-height: 1.95; color: var(--ink); word-break: auto-phrase; }
.case-body ul, .case-body ol { margin: 0 0 18px; padding-left: 1.5em; }
.case-body li { margin-bottom: 8px; font-size: 15px; line-height: 1.9; color: var(--ink); }
/* 旧「青丸リスト」。端子マークへ置き換える */
.case-body .li_bg_bluecircle { list-style: none; padding-left: 0; }
.case-body .li_bg_bluecircle li { position: relative; padding-left: 18px; }
.case-body .li_bg_bluecircle li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 2px;
  background: var(--blue-500);
}

/* ---------- 箱（well / panel）→ 筐体パネル ---------- */
.case-body .well,
.case-body .panel_w {
  margin: 0 0 var(--sp-4);
  padding: 28px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.case-body .panel-info { border-color: var(--device-edge); }
.case-body .panel-heading {
  margin: -28px -30px var(--sp-3);
  padding: 12px 30px;
  background: var(--blue-100);
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-weight: 700;
  color: var(--blue-700);
}

/* ---------- 表 ---------- */
.case-body .table-responsive { overflow-x: auto; margin: 0 0 var(--sp-3); }
.case-body table { width: 100%; min-width: 520px; border-collapse: collapse; font-size: 14px; line-height: 1.75; }
.case-body th, .case-body td { padding: 12px 14px; border: 1px solid var(--line); vertical-align: top; text-align: left; }
.case-body th { background: var(--blue-100); color: var(--blue-700); font-weight: 700; white-space: nowrap; }

/* ---------- 画像 ---------- */
.case-body img, .case-body .img-responsive {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}
.case-body .center-block { margin-left: auto; margin-right: auto; }
.case-body .img_ov { margin: 0 0 var(--sp-3); }
.case-body figure { margin: 0 0 var(--sp-3); }

/* ---------- 問い合わせ枠 ---------- */
.case-body .contactbox_w100 {
  margin: var(--sp-5) 0 0;
  padding: 32px 34px;
  background: var(--navy-950);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  color: #fff;
  text-align: center;
}
.case-body .contactbox_w100 h2,
.case-body .contactbox_w100 h3,
.case-body .contactbox_w100 h4 { margin: 0 0 10px; color: #fff; border: 0; }
.case-body .contactbox_w100 p { color: #C7D3F5; }
.case-body .contactbox_w100 a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 900;
  color: var(--ink);
  background: var(--amber);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: background-color .18s ease-out, box-shadow .18s ease-out, transform .18s ease-out;
}
.case-body .contactbox_w100 a:hover { background: var(--amber-hover); box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.case-body .contactbox_w100 :focus-visible { outline-color: var(--amber); }

/* ---------- ページトップ ---------- */
.case-body .demo-btnPagetop { margin: var(--sp-4) 0 0; text-align: center; }
.case-body .demo-btnPagetop a {
  display: inline-block;
  padding: 10px 22px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--blue-700);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color .18s ease-out, border-color .18s ease-out;
}
.case-body .demo-btnPagetop a:hover { background: var(--blue-100); border-color: var(--blue-500); }

/* ---------- 旧マージンユーティリティ ---------- */
.case-body .margin-top-sm { margin-top: 12px; }
.case-body .margin-top-md { margin-top: 24px; }
.case-body .margin-top-lg, .case-body .margin-top-lx { margin-top: 32px; }
.case-body .margin-bottom-sm { margin-bottom: 12px; }
.case-body .margin-bottom-md { margin-bottom: 24px; }
.case-body .margin-bottom-lg, .case-body .margin-bottom-llg { margin-bottom: 36px; }
.case-body .text-center { text-align: center; }

/* ---------- 一覧ページ ---------- */
.case-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.case-grid > li { display: flex; }
.case-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 24px 26px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: border-color .18s ease-out, box-shadow .18s ease-out, transform .18s ease-out;
}
.case-card:hover, .case-card:focus-visible {
  border-color: var(--blue-500);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.case-mark {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  border-radius: var(--radius-xs);
  background: var(--paper);
  box-shadow: inset 0 0 0 1px var(--device-edge);
  color: var(--blue-700);
  transition: color .18s ease-out, box-shadow .18s ease-out;
}
.case-mark svg { width: 28px; height: 28px; }
.case-card:hover .case-mark { color: var(--blue-500); box-shadow: inset 0 0 0 1px var(--blue-500); }
.case-name {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 900;
  line-height: 1.6;
  color: var(--ink);
  font-feature-settings: "palt";
}
.case-text {
  display: block;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-sub);
  word-break: auto-phrase;
}
.case-go {
  margin-top: auto;
  padding-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-700);
}
.case-go svg { width: 15px; height: 15px; flex-shrink: 0; color: var(--amber); transition: transform .18s ease-out; }
.case-card:hover .case-go { color: var(--blue-500); }
.case-card:hover .case-go svg { transform: translateX(3px); }

@media (max-width: 900px) { .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .case-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) {
  .case-body .well, .case-body .panel_w { padding: 20px 18px; }
  .case-body .panel-heading { margin: -20px -18px var(--sp-3); padding: 11px 18px; }
  .case-body .contactbox_w100 { padding: 24px 20px; }
}

/* 旧Bootstrapの残り2クラス。罫線付きテーブルは既定の表と同じ扱いにし、
   見出しアイコン用のクラスは装飾要素なので描画しない */
.case-body .table-bordered th,
.case-body .table-bordered td { border: 1px solid var(--line); }
.case-body .text-titleIcon { display: none; }

/* 一覧ヒーローの導線を subhero（紺地）へ持ち上げたぶんの調整 */
.subhero .case-hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: var(--sp-4); }
.subhero .case-button {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; font-size: 15px; font-weight: 900;
  color: var(--ink); background: var(--amber);
  border: 0; border-radius: var(--radius-sm); box-shadow: var(--shadow); text-decoration: none;
  transition: background-color .18s ease-out, box-shadow .18s ease-out, transform .18s ease-out;
}
.subhero .case-button:hover { background: var(--amber-hover); box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.subhero .case-button--ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; font-size: 14.5px; font-weight: 700;
  color: #fff; background: transparent; border-radius: var(--radius-sm);
  box-shadow: inset 0 0 0 1.5px rgba(143, 165, 236, .55); text-decoration: none;
  transition: background-color .18s ease-out, box-shadow .18s ease-out;
}
.subhero .case-button--ghost:hover { background: rgba(255, 255, 255, .07); box-shadow: inset 0 0 0 1.5px #fff; }
.subhero :focus-visible { outline-color: var(--amber); }
/* 一覧本文は事例本文より広く使う */
.case-index .container { max-width: 1100px; }

/* 旧サイトから変換した事例（case01 / case02 / case-2-*）は Bootstrap のグリッドと
   固定幅テーブルを内側に抱えており、狭幅でページ全体が横スクロールしていた
   （case01 は約690px未満で常時発生。ゼータ検収 2026-08-04）。
   本文の器は幅いっぱいに戻し、幅を持つ表だけをその中でスクロールさせる。
   `.case-body .container` / `.case-index .container` は詳細度が上なので影響を受けない */
@media (max-width: 760px) {
  .case-body .container,
  .container { max-width: 100%; padding-left: 16px; padding-right: 16px; }
  /* 表は `.case-body table` が min-width:520px を持つ。これがページ全体を押し広げていたので、
     表自身をスクロールコンテナにして最小幅の制約を切る */
  .case-body table,
  .table-responsive,
  .table { display: block; max-width: 100%; min-width: 0; overflow-x: auto; }
  .row { margin-left: 0; margin-right: 0; }
  [class*="col-xs-"],
  [class*="col-sm-"],
  [class*="col-md-"],
  [class*="col-lg-"] { padding-left: 0; padding-right: 0; float: none; width: auto; }
  .well { padding: 16px; }
  .case-legacy-img,
  .container img { max-width: 100%; height: auto; }
}